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I 10 2nd Avenue South #D7 Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925 798-1620 Fax 925-798-1622 4 <br /> http//www mccampbell cam E mad mam@mccampbell com <br /> Advanced GeoEnvlronmental Client Project ID Flag City Chevron Date Sampled 04/08/02 <br /> 837 Shaw Road Date Received 04/09/02 <br /> Client Contact Tim Cuellar Date.Extracted 04/12/02-04/13/02 <br /> Stockton, CA 95215 <br /> =ient Date Analyzed 04/12/02-04/13102 <br /> Gasoline Range(C&C12)Volatile Hydrocarbons as Gasoline with MTBE and BTEX* <br /> xtracnon method SW5030B Analyucal methods SW8021B/8015Cm Work Order 0204142 <br /> Lab ID Client ID Matnx TPH(g) MTBE Benzene Toluene Ethylbenzene Xyienes DF %SS <br /> I <br /> OOIA r MW8a/040802 W NIA 680 NIA NiA N/A N/A 20 105 <br /> i <br /> i <br /> � i f <br /> I <br /> Reporting Limit for DF=1, W 50 5 05 05 05 05 ug/L <br /> ND means not detected at or S l 005 0 005 0 005 0 005 0 005 mg/Kg <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,wipe samples in ug/wipe,and TCLP extracts in ug/L <br /> DF=dilution factor <br /> #cluttered chromatogram,sample peak coelutes with surrogate peak <br /> +The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their interpretation a) <br /> unmodified or weakly modified gasoline is significant,b)heavier gasoline range compounds are signrficant(aged gasoline i),c)lighter gasoline range <br /> compounds(the most mobile fraction)are significant,d)gasoline range compounds having broad chromatographic peaks are significant biologically <br /> altered gasol[neg,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent),f)one to a few isolated non-target peaks present, <br /> g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water immiscible sheen/product is present,1)liquid sample that <br /> . contains greater than--2 vol %sediment j)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />